Update dependency @octokit/request-error to v6.1.8 (#1732)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package-lock.json

@@ -3,7 +3,7 @@
     "@actions/github": "6.0.0",
     "@octokit/plugin-paginate-rest": "11.6.0",
     "@octokit/plugin-rest-endpoint-methods": "13.5.0",
-    "@octokit/request-error": "6.1.7"
+    "@octokit/request-error": "6.1.8"
   },
   "devDependencies": {
     "@proofdict/textlint-rule-proofdict": "3.1.2",